package util;

import common.ApplicationVariable;
import model.UserInfo;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class SessionUtil {

    /**
     * 得到登录的用户
     */
    public static UserInfo getSessionUserInfo(HttpServletRequest req) {
        HttpSession session = req.getSession(false);
        UserInfo userInfo = null;
        if (session != null && session.getAttribute(
                ApplicationVariable.SESSION_USER_KEY) != null) {
            userInfo = (UserInfo) session.getAttribute(
                    ApplicationVariable.SESSION_USER_KEY);
        }
        return userInfo;
    }

}